For the 2026 school year, there are 2 public high schools serving 2,540 students in O Fallon, IL.
The top-ranked public high school in O Fallon, IL is O Fallon High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
O Fallon, IL public high schools have an average math proficiency score of 36% (versus the Illinois public high school average of 26%), and reading proficiency score of 42% (versus the 29% statewide average). High schools in O Fallon have an average ranking of 9/10, which is in the top 20% of Illinois public high schools.
O Fallon, IL public high school have a Graduation Rate of 94%, which is more than the Illinois average of 87%.
The school with highest graduation rate is O Fallon High School, with 94% graduation rate. Read more about public school graduation rate statistics in Illinois or national school graduation rate statistics.
Minority enrollment is 41% of the student body (majority Black), which is less than the Illinois public high school average of 55% (majority Hispanic).
Best Public High Schools in O Fallon, IL (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
O Fallon High School
(Math: 36% | Reading: 42%)
Rank:
Rank:
8/
Top 30%10
600 S Smiley St
O Fallon, IL 62269
(618) 632-3507
O Fallon, IL 62269
(618) 632-3507
Gr: 9-12 | 2,540 students Student-teacher ratio: 16:1 Minority enrollment: 41%
Rank: n/an/a
Innovative Pathways Program
Alternative School
309 Hartman Ln
O Fallon, IL 62269
(618) 825-3900
O Fallon, IL 62269
(618) 825-3900
Gr: 4-12
Frequently Asked Questions
What are the top-ranked public high schools in O Fallon, IL?
The top-ranked public high schools in O Fallon, IL include O Fallon High School.
How many public high schools are located in O Fallon?
2 public high schools are located in O Fallon.
What is the racial composition of students in O Fallon?
O Fallon public high schools minority enrollment is 41% of the student body (majority Black), which is less than the Illinois public high schools average of 55% (majority Hispanic).
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